Feed mechanism for saw-mill carriages



(No Model.) 2 Sheets-Sheet 1.

J. W. EMERSON 8v A. C. STARBIRD. FEED MBGHANISM EUR SAW MILL GARRIAGBS.

No. 369,781. Patented Sept-13, 1887.

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nJ. W. EMERSON s A. C. STARBIRD. FEED MBGHANISMPOR SAW MILL ARRIAGES.

No. 369,781. a Patented. Sept. 13, 1887.

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PATENT Orricn.

JOHN W. EMERSON AND AUSTIN C.

FEED VIECHANISIVI FOR STARBIRD, OF APOPKA, FLOR-IDA.

SAW-MILL CARRIAGES.

SPECIFICATION forming par-t of Letters Patent Nc. 369,781, dated September 13,1887.

Application iiled March 4, 1897. Serial No. 229,716. (No model.)

To all whom, it may concern:

Beit known that we, JOHN W. EMERSON and AUSTIN G. STARBIRD, citizens of the United States,residing at Apopka, in the county of Orange and State of Florida, have invented certain new and useful Improvements in Feed Mechanism for Saw-Mill Oarriages; and we do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which forni a part of this specification.

The object of this improvementisasaw-feeding mechanism that can be reversed and made to move backward with speed that is greater than the forward feed, and that is adapted by the adjustment of its parts to different speeds in both directions of its movement. These results are" attained by the means illustrated in the drawings herewith filed as part hereof, in which the same letters of reference denote the same parts in the different views.

Figure l is a plan, with parts shown in section and parts removed, representing sawfeeding mechanism embodying the features of our improvement. Fig. 2 is a longitudinal vertical section taken on the line c a: of Fig. l.

A A represent the saw-supporting frame.

.B is the saw-mandrel, fixed to the frame in the usual manner by brackets, as shown.

C is the saw.

D is the driving-pulley.

E is a friction-disk having a long integral hub, E.

F is a friction-disk having an integral hub fitted to the hub-extension E of the disk E, to which it isadjustablysecured by set-screwsf. The hub E of the disk E is provided with a groove for the reception of a feather, b, on the mandrel B, on which the disks E and F are adjustable at the will of the operator, as will be hereinafter fully explained.

G G are friction-disks arranged to revolve transversely to the disks E F by contact with the same. The disks G G have hub-extensions tted to a sleeve, H, supported by a shaft, K. The disks G G are adjustably secured to the sleeve H by set-screws in their hub-extensions, as fully shown at gg in Fig. 2.

The shaft K is supported in au inclined position by brackets ct", bolted to the central frame-beam, A The sleeve H is provided with a groove for the reception of a feather, l1, on the shaft K.

L is the feed-shaft, which has its bearings in boxes suitably secured to the lower edges of the central frame-beam, A', and the framebeam adjacent to the saw C.

L is a bevel-gear Xed to the inner end of the shaft L, which is provided at its outer end with a pinion, L2. n

N is a beveled pinion ou the outer end of the shaft K and arranged to mesh with the gear-wheel L.

The hub-extension F/ of the disk E is provided with two collars, a a', preferably made in half-sections with perforated flanges and firmly clamped to the hub E by bolts ci. The hub E is provided intermediate of the collars a c with a collar, b', having slots on two opposite sides of the hub E', as shown at b2 in Fig.4 2.

l? is a rod having a rectangular extension, 1)', provided at its end with arms p p', which are curved in a manner to clear the collar b on the hub E. The aims pp' are provided with pins p2, which project inward and enter the slots b2 in the collar b. The rod P P is supported by and arranged to oscillate in brackets Q Qj, bolted to the frame-beam A. The rod l? is provided adjacent to its end with a longitudinally and transversely perforated eye, d, which is secured to the rod P by a setscrew, d.

R is a lever having a bifurcated eye at its lower end, by means of which it is pivotally connected to the transversely-perforated part of the double eye d, as shown at r in Fig. 2.

S is a rod pivotally connnected at s to the lever R, and provided at its opposite end with curved arms S', which set in a grooved shoulder, 7i', ofthe sleeve H.

T is a curved rack having an eye, t, fitted to the rod P, to which it is secured by a setscrew, t.

R represents au ordinary latching device fixed to thelever R for use in connection with the rack T.

By reason of the pivotal connection of the rections longitudinally with the machine.

lever R with the transverselyperforated part of the double eye d, fixed to the rod l), the lever R may be adjusted in opposite diis obvious that it may also be adjusted transversely, and that by reason of its rigid conthrough the curved arms p p and their cony nection with the collar b on the hub E ofthe disk E, to which the disk F is secured, as shown. The adjustment of thelever R toward the saw side of the saw-framc will bring the disk E in contact with the transverse disk G. By adjusting the lever R in the opposite direetion the friction-disk F will be brought in contact with the transverse disk G, which will be entirely clear of the disk E by reason ofthe may require, thereby attained, as the mot-ionA of the carriage will be governed by the speed of the pinion L2 on the shaft L, which is operated through its geared connection with the shaft K, which is driven by the disks G G, when they are brought in contact with the disks E or F, as the case may be.

Suitable action of the parts for forward feed is obtained bycontact of the disks F and G. Reverse motion ofthe feed will be produced by contact of the disks Eand G. The disk E being the largest and the disk G being arranged to engage the disk E ata greater distance from the mandrel than the disk G engages the disk F, the motion of the disk G will be greater' than that of the disk G, and the shaft L will move faster when the disk G is in contact with the disk E than when thedisk G is in contact with the disk F, and the return movement of the carriage will be more rapid than the feed.

By reason of the adj ustability of the disk F, it may be set nearer to or farther from the disk E. By reason of the detachable connection of the disks G G with the sleeve H, they may be removed and replaced by larger or smaller disks, as may be deemed advisable forincreasing or reducing the speed of the shaft L, and

the disks E F may be secured in relative prositions adapted to the size of the disks G G. The'speed ofthe feed motion and reverse action of the same may be changed more or less by adjusting and securing the disks G G in different positions on the-sleeve H.

Having explained the construction and operation of my improvement, what l claim as new, and desire to secure by Letters Patent of the United States, is-

l. The combination of the frietion-disks supported by and movable on the saw-mandrel, the friction-disks adjustable on and supported by the inclined shaft fixed to the saw-frame and geared to the feed-shaft, the rock-shaft for operating the friction-disks on the saw-mandrel, the rod for operating the sleeve,disks sup ported by the inclined shaft fixed to the sawframe, and the lever for operating the rod and rock -shaft and adjusting the friction-disks, substantially as specified, for the purpose set forth.

2. The friction-disks supported by and movable on the saw-mandrel, the friction-disks supported by andv movable on the inclined shaft ixed to the saw-frame and geared to the feed-shaft, the lever and curved rack-bar secured to rock-shaft, and the con necting` curved movingrod, in combination with the sawframe, saw-mandrel, and drive-pulley, substantially as shown and described.

In testimony whereof we affix our signatures in presence of two witnesses.

JOHN W'. EMERSON, i

AUSTIN G. STARBIRD.

Witnesses:

H. WITHERINGTON, E. C. MORGAN. 

